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Author(s):	Mensinger, Martin; Trometer , Stefan; Reyer, Dominic
Title:	Dynamische Systemantwort des Timoshenko-Balkens unter Impulseinwirkung aus Detonation
Abstract:	Stützenkonstruktionen werden für die Abtragung von Vertikallasten dimensioniert, zusätzliche horizontale Belastungen durch außergewöhnliche Einwirkungen wie Detonationen stellen dabei eine große Herausforderung dar. Die Bestimmung der dynamischen Systemantwort bei variabler Normalkraftauslastung ist notwendig, um die dynamischen Effekte unter einer solchen Impulsbelastung mit ausreichender Präzision abzubilden, sie zu verstehen und daraus die Beanspruchungen genau zu ermitteln. Die Wahl einer passenden Balkentheorie in Kombination mit einer effizienten Lösungsstrategie ist dabei von zentraler Bedeutung. Als zielführend hat sich die Modalanalyse erwiesen, die auf den Timoshenko-Balken angewandt wird. Das Lösungsverfahren wird vorgestellt, untersucht und mit anderen ausgewählten Lösungsverfahren verglichen und diskutiert. Dynamic system response of the Timoshenko beam subjected to impulsive loading due to explosion. Column constructions are designed to safely transfer vertical loads into the ground. Hence additional horizontal loading caused by accidental loading due to explosion constitute a major challenge. The determination of the dynamic system response at variable axial loading is required to identify the dynamic effects with adequate accuracy, to understand the mechanisms and to derive the design state. It is of importance to choose a suitable beam theory in combination with an efficient solution strategy. Herein, the modal analysis with an extension for continuous systems is applied on basis of the Timoshenko beam theory. The complete solution strategy is presented, investigated, compared with other selected strategies and discussed herein.
Source:	Stahlbau 81 (2012), No. 5
Page/s:	366-372
Language of Publication:	German

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